(1) What Beria--and Malenkov--proposed after Stalin's death was not a different division of Germany but its reunification. (Stalin had also proposed that in his famous Note of March 1952, but there is reason to think that Stalin simply proposed it in the expectation that it would be rejected whereas Beria and Malenkov were more serious about it. See my post at
https://www.alternatehistory.com/fo...soviet-union-looks-like.453155/#post-17685244 for an argument that indeed the CPSU Presidium as a whole may have supported reunification in the months before the Berlin Uprising and the fall of Beria.)
(2) For Adenauer's plan in the early 1960's to swap West Berlin for part of the GDR, see
https://www.spiegel.de/internationa...ap-west-berlin-for-parts-of-gdr-a-780385.html My view is that while it is just possible the US would have gone along with this (though JFK would have to brave GOP charges that having sold out the Cubans at the Bay of Pigs he was now selling out the people of West Berlin), the USSR never would, for the following reasons:
(a) Why would the Soviets agree to swap important industrial areas of the GDR for a West Berlin that will probably be largely depopulated as its residents flee to the Federal Republic?
(b) Khrushchev liked to be able to use West Berlin as leverage in his dealings with the US and the West in general--when he wanted to, he could increase pressure on West Berlin, and when he wanted détente he could reduce the pressure. Resolving the Berlin issue once and for all would decrease his bargaining leverage.
(c) The proposed territorial changes would greatly help NATO by easing the threat on the Fulda Gap.
(d) The very fact that the West was making such an offer would be seen as a sign it recognized West Berlin was indefensible--so the Soviets would feel they would eventually get it anyway.
So the whole idea looks like a non-starter to me.